Jay, unless you are a sucker for punishment, your daily run will be <100 km/day.
That is 2k km/mo, assuming only weekdays commute. => 24k km/annum. So a new set is required once every two years (a reasonable 50k km/set is assumed).
A good set of tyres is 10k for 5 tyres (Michelin XM1+, I saw bought on 27/Sep/09) So yearly expenses on the tyres is Rs. 5K.
Assuming ~16 kmpl, you would spend 72k Rs. on Petrol alone. Why are you thinking about the extra 5k, which turns out to be just ~7% of the running costs? If you translate it to expenses per km, it would turn out to be 20p. per km.
If the run is lesser, then the tyres will last you much longer, consequently annual expenses towards tyres will be even less. Is your life not worth the 10 Rs. daily that is required for a set of tyres in condition?
Why do you want to play with fire?
Please tell us, if you feel it is still justified to retread tyres.
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